They are spread throughout the single player maps and give the game more replay value for those players willing to hunt them down to unlock the “Complete Blackout” and “Communication Issues” Achievements / Trophies.

There are 24 M-Com Locations in total. Here are the locations of the first 12 M-Com stations that you must blow up by arming the explosives on each one. They can be found here: 2 on Heart of Darkness, 2 on Upriver, 2 on Crack The Sky, 2 on Snowblind, 2 on Heavy Metal, and 2 on High Value Target.

This video is part 1 of 2, it walks you through M-Com Locations 1 to 12.

The last 12 can be found here: 4 on Sangre Del Toro, 4 on No One Gets Left Behind, and 4 on Zero Dark Thirty.

This video is part 2 of 2, it walks you through M-Com Locations 13 to 24.

For more tips, check out our Battlefield: Bad Company 2 Weapons Collectables Guide.

Thanks to RoosterTeeth for the M-Com tips. — Good luck finding them all!